OpenJDK7 Backports

[Dr Andrew John Hughes]

On 28 July 2010 17:00, David Dabbs <dmdabbs at gmail.com> wrote:
> I seem to remember a recent changeset related to CPU topology detection.
> If this did not go into 6u21 can it be packported to OpenJDK?
> My apologies if this is not the correct forum for this question.
>

Hi David,

I think the patch you're referring to is:

6968646: JVM crashes with SIGFPE during startup
Summary: Check that cpuid returns valid values for processor topology
(not zeros).
Reviewed-by: never, twisti
http://hg.openjdk.java.net/jdk7/jdk7/hotspot/rev/079980c86f3308af97

Our usual process with HotSpot in OpenJDK6 is to do wholesale imports
of new versions from the stable branches (e.g.
hhttp://hg.openjdk.java.net/hsx/hsx17/master/) rather than individual
changesets, though they do happen when need necessities.

I don't think this patch has had long enough in JDK7 to be backported,
and it doesn't apply cleanly (the line if
(_cpuid_info.std_max_function >= 0xB) replaced in the patch isn't in
the OpenJDK6 HotSpot).  It will appear anyway, if and when a stable
hs19 appears and is imported.

> Thank you,
>
> David
>
>
> -----Original Message-----
> From: jdk6-dev-bounces at openjdk.java.net [mailto:jdk6-dev-bounces at openjdk.java.net] On Behalf Of Dr Andrew John Hughes
> Sent: Wednesday, July 28, 2010 10:19 AM
> To: jdk6-dev
> Subject: OpenJDK7 Backports
>
> Hi Joe,
>
> Can I have permission to backport the following to OpenJDK6:
>
> changeset:   1216:f62f7fcc9965
> parent:      1198:b28b073e72b6
> user:        art
> date:        Fri May 15 15:40:35 2009 +0400
> summary:     6678385: Random java.lang.StackOverflowError from various JDKs
> http://hg.openjdk.java.net/jdk7/jdk7/jdk/rev/f62f7fcc9965
>
> changeset:   159:df5d7e6ac15e
> user:        xuelei
> date:        Wed Apr 02 22:44:45 2008 -0400
> summary:     6668231: Presence of a critical subjectAltName causes
> JSSE's SunX509 to fail trusted checks
> http://hg.openjdk.java.net/jdk7/jdk7/jdk/rev/df5d7e6ac15e
>
> changeset:   2527:f1bafc4f249d
> user:        peterz
> date:        Tue Jun 29 14:42:30 2010 +0400
> summary:     6963870: NPE in CompoundBorder.getInsets()
> http://hg.openjdk.java.net/jdk7/jdk7/jdk/rev/f1bafc4f249d
>
> Thanks,
> --
> Andrew :-)
>
> Free Java Software Engineer
> Red Hat, Inc. (http://www.redhat.com)
>
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-- 
Andrew :-)

Free Java Software Engineer
Red Hat, Inc. (http://www.redhat.com)

Support Free Java!
Contribute to GNU Classpath and the OpenJDK
http://www.gnu.org/software/classpath
http://openjdk.java.net

PGP Key: 94EFD9D8 (http://subkeys.pgp.net)
Fingerprint: F8EF F1EA 401E 2E60 15FA  7927 142C 2591 94EF D9D8